1// Copyright (c) 2012 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#include "ui/views/widget/aero_tooltip_manager.h" 6 7#include <windows.h> 8#include <commctrl.h> 9#include <shlobj.h> 10 11#include "base/bind.h" 12#include "base/message_loop/message_loop.h" 13#include "ui/base/l10n/l10n_util_win.h" 14#include "ui/gfx/point.h" 15#include "ui/gfx/win/dpi.h" 16#include "ui/gfx/win/hwnd_util.h" 17 18namespace views { 19 20/////////////////////////////////////////////////////////////////////////////// 21// AeroTooltipManager, public: 22 23AeroTooltipManager::AeroTooltipManager(Widget* widget) 24 : TooltipManagerWin(widget), 25 initial_delay_(0) { 26} 27 28AeroTooltipManager::~AeroTooltipManager() { 29 if (initial_timer_) 30 initial_timer_->Disown(); 31} 32 33void AeroTooltipManager::OnMouse(UINT u_msg, WPARAM w_param, LPARAM l_param) { 34 if (u_msg == WM_MOUSELEAVE) { 35 last_mouse_pos_.SetPoint(-1, -1); 36 UpdateTooltip(); 37 return; 38 } 39 40 if (initial_timer_) 41 initial_timer_->Disown(); 42 43 if (u_msg == WM_MOUSEMOVE || u_msg == WM_NCMOUSEMOVE) { 44 gfx::Point mouse_pos_in_pixels(l_param); 45 gfx::Point mouse_pos = gfx::win::ScreenToDIPPoint(mouse_pos_in_pixels); 46 if (u_msg == WM_NCMOUSEMOVE) { 47 // NC message coordinates are in screen coordinates. 48 POINT temp = mouse_pos_in_pixels.ToPOINT(); 49 ::MapWindowPoints(HWND_DESKTOP, GetParent(), &temp, 1); 50 mouse_pos_in_pixels.SetPoint(temp.x, temp.y); 51 mouse_pos = gfx::win::ScreenToDIPPoint(mouse_pos_in_pixels); 52 } 53 if (last_mouse_pos_ != mouse_pos) { 54 last_mouse_pos_ = mouse_pos; 55 UpdateTooltip(mouse_pos); 56 } 57 58 // Delay opening of the tooltip just in case the user moves their 59 // mouse to another control. We defer this from Init because we get 60 // zero if we query it too soon. 61 if (!initial_delay_) { 62 initial_delay_ = static_cast<int>( 63 ::SendMessage(tooltip_hwnd_, TTM_GETDELAYTIME, TTDT_INITIAL, 0)); 64 } 65 initial_timer_ = new InitialTimer(this); 66 initial_timer_->Start(initial_delay_); 67 } else { 68 // Hide the tooltip and cancel any timers. 69 ::SendMessage(tooltip_hwnd_, TTM_POP, 0, 0); 70 ::SendMessage(tooltip_hwnd_, TTM_TRACKACTIVATE, false, (LPARAM)&toolinfo_); 71 return; 72 } 73} 74 75/////////////////////////////////////////////////////////////////////////////// 76// AeroTooltipManager, private: 77 78void AeroTooltipManager::OnTimer() { 79 initial_timer_ = NULL; 80 81 POINT pt = last_mouse_pos_.ToPOINT(); 82 ::ClientToScreen(GetParent(), &pt); 83 84 // Set the position and visibility. 85 if (!tooltip_showing_) { 86 ::SendMessage(tooltip_hwnd_, TTM_POPUP, 0, 0); 87 ::SendMessage(tooltip_hwnd_, TTM_TRACKPOSITION, 0, MAKELPARAM(pt.x, pt.y)); 88 ::SendMessage(tooltip_hwnd_, TTM_TRACKACTIVATE, true, (LPARAM)&toolinfo_); 89 } 90} 91 92/////////////////////////////////////////////////////////////////////////////// 93// AeroTooltipManager::InitialTimer 94 95AeroTooltipManager::InitialTimer::InitialTimer(AeroTooltipManager* manager) 96 : manager_(manager) { 97} 98 99void AeroTooltipManager::InitialTimer::Start(int time) { 100 base::MessageLoop::current()->PostDelayedTask( 101 FROM_HERE, 102 base::Bind(&InitialTimer::Execute, this), 103 base::TimeDelta::FromMilliseconds(time)); 104} 105 106void AeroTooltipManager::InitialTimer::Disown() { 107 manager_ = NULL; 108} 109 110void AeroTooltipManager::InitialTimer::Execute() { 111 if (manager_) 112 manager_->OnTimer(); 113} 114 115} // namespace views 116